/Engine/Source/Runtime/SlateCore/Public/Widgets/SlateControlledConstruction.h
template<typename InWidgetParentType> FSlateWidgetClassData ( [TIdentity](API\Runtime\Core\Templates\TIdentity)< InWidgetParentType >, [FName](API\Runtime\Core\UObject\FName) InWidgetTypeName, void(*)(FSlateAttributeInitializer &) AttributeInitializer )